Healthcare provider profile · identity verified

David E Johnson, MS, PA-C

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · MADISONVILLE, KY · NPI 1780781302

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show David E Johnson, MS, PA-C received $3,095.44 in general payments during 2025 across 156 reported records.

Janssen Biotech, Inc. accounted for 29.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 19 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Linzess, Rezdiffra, Trulance, Voquezna, Xifaxan.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 42 claims for Linzess by this doctor in 2024.

Madrigal Pharmaceuticals reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported REZDIFFRA as an associated drug or biological on 75650 records involving 19195 distinct recipient NPIs. Public Medicare Part D data also shows 42 claims for Rezdiffra by this doctor in 2024.

Phathom Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported VOQUEZNA as an associated drug or biological on 90302 records involving 33442 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Voquezna by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRULANCE as an associated drug or biological on 2652 records involving 1501 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Trulance by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported XIFAXAN as an associated drug or biological on 101901 records involving 33018 distinct recipient NPIs. Public Medicare Part D data also shows 28 claims for Xifaxan by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$3,095.44

156 reported records · 12 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $899.3129.1%372025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $516.6816.7%302025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $469.3115.2%222025
Ardelyx, Inc. Unresolved — no canonical attribution shown $317.1310.2%192025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $314.2410.2%162025
ABBVIE INC. Unresolved — no canonical attribution shown $233.657.5%172025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $133.714.3%52025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $71.072.3%32025
QOL Medical, LLC Unresolved — no canonical attribution shown $49.181.6%22025
PFIZER INC. Unresolved — no canonical attribution shown $44.651.4%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $30.661.0%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $15.850.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$3,010.49155
Education$84.951

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $899.31 37 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $516.68 30 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $469.31 22 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $317.13 19 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $300.05 15 2025
Source payment records
  • 2025-02-19 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $13.95 · Open Payments source
  • 2025-02-27 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $20.63 · Open Payments source
  • 2025-03-21 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.38 · Open Payments source
  • 2025-04-10 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.54 · Open Payments source
  • 2025-05-19 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.72 · Open Payments source
  • 2025-06-09 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $23.22 · Open Payments source
  • 2025-06-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.00 · Open Payments source
  • 2025-06-30 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $11.54 · Open Payments source
  • 2025-08-04 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.81 · Open Payments source
  • 2025-08-19 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $20.39 · Open Payments source
  • 2025-09-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $23.38 · Open Payments source
  • 2025-10-21 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.60 · Open Payments source
  • 2025-11-24 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $21.65 · Open Payments source
  • 2025-12-22 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.56 · Open Payments source
  • 2025-12-23 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $24.68 · Open Payments source
GIVLAARI
Normalized: givlaari
Drug Alnylam Pharmaceuticals Inc. $133.71 5 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $80.15 5 2025
Source payment records
MAVYRET
Normalized: mavyret
Drug ABBVIE INC. $77.02 6 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $76.48 6 2025
Source payment records
GATTEX
Normalized: gattex
Drug Takeda Pharmaceuticals U.S.A., Inc. $71.07 3 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $68.27 5 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $51.67 4 2025
Source payment records
Sucraid
Normalized: sucraid
Drug QOL Medical, LLC $49.18 2 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $44.65 2 2025
Source payment records
TRULANCE
Normalized: trulance
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $37.57 2 2025
Source payment records
  • 2025-01-10 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.19 · Open Payments source
  • 2025-09-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $23.38 · Open Payments source
OMVOH
Normalized: omvoh
Drug Lilly USA, LLC $30.66 2 2025
Source payment records
VIBERZI
Normalized: viberzi
Drug ABBVIE INC. $28.48 1 2025
Source payment records
XELJANZ
Normalized: xeljanz
Drug PFIZER INC. $21.79 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $15.85 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
LINZESS
linzess
2025 Linzess 2024 42 exact normalized Medicare Part D
REZDIFFRA
rezdiffra
2025 Rezdiffra 2024 42
Beneficiary count suppressed
exact normalized Medicare Part D
TRULANCE
trulance
2025 Trulance 2024 13
Beneficiary count suppressed
exact normalized Medicare Part D
VOQUEZNA
voquezna
2025 Voquezna 2024 24
Beneficiary count suppressed
exact normalized Medicare Part D
XIFAXAN
xifaxan
2025 Xifaxan 2024 28 exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
42 24
Madrigal Pharmaceuticals
Exact reporting entity; no affiliate inference
2025 REZDIFFRA
open payments reported associated product
CMS Open Payments — General Payments
75650 supporting records · 19195 recipient NPIs · example record 1248227746
Rezdiffra · 2024
Exact normalized brand match · 1 Part D row
42 suppressed by CMS
Phathom Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 VOQUEZNA
open payments reported associated product
CMS Open Payments — General Payments
90302 supporting records · 33442 recipient NPIs · example record 1219216983
Voquezna · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 TRULANCE
open payments reported associated product
CMS Open Payments — General Payments
2652 supporting records · 1501 recipient NPIs · example record 1231775445
Trulance · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 XIFAXAN
open payments reported associated product
CMS Open Payments — General Payments
101901 supporting records · 33018 recipient NPIs · example record 1231775337
Xifaxan · 2024
Exact normalized brand match · 1 Part D row
28 11

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
Pantoprazole SodiumPantoprazole Sodium11148
OmeprazoleOmeprazole6834
Esomeprazole MagnesiumEsomeprazole Magnesium6132
SucralfateSucralfate5935
FamotidineFamotidine5826
Dicyclomine HclDicyclomine Hcl5124
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates4545
LinzessLinaclotide4224
RezdiffraResmetirom42suppressed
Dexlansoprazole DrDexlansoprazole4018
XifaxanRifaximin2811
MetronidazoleMetronidazole2524
VoqueznaVonoprazan Fumarate24suppressed
LactuloseLactulose2014
NadololNadolol20suppressed
Amitriptyline HclAmitriptyline Hcl17suppressed
Mesalamine ErMesalamine15suppressed
Promethazine HclPromethazine Hcl15suppressed
FurosemideFurosemide14suppressed
SpironolactoneSpironolactone13suppressed
TrulancePlecanatide13suppressed
ClarithromycinClarithromycin1211
MesalamineMesalamine12suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $3,095.44 · 156 records Janssen Biotech, Inc. CREON, Cologuard Collection Kit, GATTEX, GIVLAARI, IBSRELA, LINZESS, MAVYRET, OMVOH, REZDIFFRA, RINVOQ, SKYRIZI, Sucraid, TREMFYA, TRULANCE, VELSIPITY, VIBERZI, VOQUEZNA, XELJANZ, XIFAXAN 5
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error